// Copyright 2015-2022 Brian Smith.

//

// Permission to use, copy, modify, and/or distribute this software for any

// purpose with or without fee is hereby granted, provided that the above

// copyright notice and this permission notice appear in all copies.

//

// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES

// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF

// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY

// SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES

// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION

// OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN

// CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

use crate::limb::Limb;

#[derive(Clone, Copy)]

#[repr(transparent)]

pub struct N0([Limb; 2]);

impl N0 {

    #[cfg(feature = "alloc")]

    pub(super) const LIMBS_USED: usize = 64 / crate::limb::LIMB_BITS;

    #[inline]

    pub const fn precalculated(n0: u64) -> Self {

        #[cfg(target_pointer_width = "64")]

        {

            Self([n0, 0])

        }

        #[cfg(target_pointer_width = "32")]

        {

            Self([n0 as Limb, (n0 >> crate::limb::LIMB_BITS) as Limb])

        }

    }

}